EP2638957A1 - Umsetzungssystem für bröckligen Feststoff mit Ladungsvorrichtung und Ladeverfahren für dieses Produkt - Google Patents

Umsetzungssystem für bröckligen Feststoff mit Ladungsvorrichtung und Ladeverfahren für dieses Produkt Download PDF

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Publication number
EP2638957A1
EP2638957A1 EP13159574.6A EP13159574A EP2638957A1 EP 2638957 A1 EP2638957 A1 EP 2638957A1 EP 13159574 A EP13159574 A EP 13159574A EP 2638957 A1 EP2638957 A1 EP 2638957A1
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EP
European Patent Office
Prior art keywords
load
conveyor belt
loading
hopper
storage unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13159574.6A
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English (en)
French (fr)
Inventor
Stéphane Lalouelle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MBA Finance
Original Assignee
MBA Finance
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Filing date
Publication date
Application filed by MBA Finance filed Critical MBA Finance
Publication of EP2638957A1 publication Critical patent/EP2638957A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
    • B01J8/002—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor with a moving instrument
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
    • B01J8/003—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor in a downward flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00743—Feeding or discharging of solids
    • B01J2208/00752—Feeding

Definitions

  • the present invention relates to the field of product conversion involving at least one friable solid product such as aggregates, pulverulent products, or subdivided products.
  • the invention relates to an installation for the conversion of a friable solid product, and to a method of changing the loading of such a product implemented through the installation according to the invention.
  • a friable solid product for example a catalyst, for example to convert heavy cuts of oil into lighter cuts, or to achieve a hydrodesulfurization process.
  • petroleum refining is a process that involves several stages, from its extraction from the rock to its use as a raw material for the manufacture of industrial products of all kinds, or even its use as a raw material. than fuel.
  • the petroleum refining process includes a step of extracting its deposit and then distillation in specific columns.
  • the oil is in the form of so-called heavy cuts, that is to say constituted by long chains of carbon atoms.
  • the oil is not directly exploitable because the carbon chains are too long and sulfurous.
  • This conversion step is generally carried out by a thermal or catalytic cracking process.
  • the most common cracking processes are, for example, catalytic cracking, catalytic hydrocracking, or steam-cracking or hydrodesulfurization.
  • Catalytic cracking is a process which makes it possible to break up the molecules constituting crude oil, in particular by adding a catalyst to the reactor.
  • the catalyst is intended to accelerate or make possible a thermodynamically long or impossible chemical reaction.
  • the catalyst makes it possible in particular to substantially increase the amount of product obtained from a given amount of reagent.
  • Catalysts are known in solid, liquid or powder form.
  • solid catalysts in the form of rods, for example alumina, cobalt, nickel, vanadium, or chromium, are often used in the case of hydrodesulfurization.
  • the cracking process is typically carried out in a catalytic cracking and hydrodesulfurization unit.
  • a catalytic cracking and hydrodesulfurization unit For this purpose, it is known to dispose the catalyst in a storage hopper positioned above the reactor in which the desulfurization will be carried out.
  • the catalyst may have to be changed according to its performance relative to the treatment of the load. Thus, it is common to have to introduce successively into the hopper different types of catalysts in varying amounts.
  • the volume of catalyst initially introduced is not the exact volume of catalyst that must be used. For this purpose, it is necessary to drain the unused catalyst volume and to introduce the new catalyst in the hopper.
  • the hopper emptying operation is stopped, the hopper is removed from its support, the hopper is emptied to the ground, and the hopper is filled with the appropriate catalyst.
  • This operation necessarily involves a stop of the loading site, at least during the time of change of the loading of the hopper. Such a stoppage of production inevitably results in a loss of productivity.
  • the present invention aims to reduce the adverse effects on production related to the change of loading of the storage hopper.
  • the installation according to the invention is intended to implement, preferably, a hydrotreatment and charge treatment process such as a hydrodesulfurization process, but can of course as previously described to be used to implement any other method, in particular crushing, for transforming a friable solid material in block form into a material in powder form.
  • a hydrotreatment and charge treatment process such as a hydrodesulfurization process
  • the installation 1 comprises a storage unit constituted as represented by a storage hopper 3 intended to receive at its upper part 4 a load not shown.
  • the loading is placed temporarily in the hopper 3 intended to be emptied by its lower part 5.
  • the hopper is in a known manner made of steel, plastic or stainless steel, or even fabric. It is of course not excluded that the storage unit is in a form different from that defined by the hopper 3, such as for example a tank comprising means for emptying it, or that the hopper is made in any other way. material than those mentioned above.
  • such a loading can be constituted for example by a catalyst intended to promote or make possible a reaction which will take place in a processing unit such as a reactor 6 external to said installation, or may for example also be constituted by a friable solid product to be converted, a powder or a subdivided product.
  • the hopper conventionally adopts the shape of a funnel whose lower part 5, of reduced opening relative to the upper part 4 which allows the introduction of the load, is able to be opened and closed at will by means of a guillotine valve 7 controlling the emptying of the hopper.
  • the emptying of the hopper can of course be carried out by any other means allowing the opening / closing of the lower part to allow extraction by gravity of the load contained in the hopper.
  • top 4 and bottom 5 of the hopper are aligned with respect to a longitudinal axis 8 of the hopper 3.
  • the lower part 5 can be off-center of said longitudinal axis if the person skilled in the art finds it of particular interest.
  • the hopper 3 is maintained at altitude at a predetermined distance from the ground by means of a holding structure 9.
  • the holding structure can be made of any material adapted to support the weight of the hopper 3.
  • the holding structure 9 comprises legs 10 advantageously telescopic so as to allow a variable arrangement of said structure, the arrangement depending on the type and shape of the soil on which it rests. Furthermore, the structure 9 also comprises a bridge 11 located substantially around the upper part 4 of the hopper. This gateway allows an operator to be able to intervene on loading when introduced into the hopper from its storage tank.
  • the support structure 9 advantageously receives a protective roof 12 of the load arranged to protect the load against moisture, some types of catalysts being very sensitive.
  • the protective roof may be flexible and is for example made of a tarpaulin that is reported in the upper part of the structure, above the hopper, or rigid, and is in this case directly integrated into the structure 9 .
  • inert gas diffusion device such as dinitrogen.
  • diffusion nozzles 13 are positioned around the part of the structure supporting the protective roof 12. The introduction of inert gas into the space defined between the upper part 4 of the hopper 3 and the protective roof 12 allows the catalyst to better resist moisture and prevent oxidation by air.
  • the support structure 9 of the hopper 3 is also equipped at its upper part, substantially above the upper part 4 of the hopper, with a retaining grid 14 for stopping the accidental dropping of objects inside. of the hopper.
  • the support structure 9 of the hopper is advantageously equipped with a scale (not shown) allowing easy and secure access to the upper part 4 of the hopper constituting the filling area of the hopper.
  • the holding structure 9 further comprises a bracket 15 adopting substantially the shape of a "half T".
  • the shape of the gallows 15 may of course be quite different if the skilled person finds a particular interest, and may for this purpose have a form of "H" or "I” for example.
  • the bracket 15 comprises a monorail whose end is secured to a foot 17, preferably telescopic.
  • the bracket 15 extends substantially in the extension of the bridge 11, to an introduction sleeve 18 of the load in the external processing unit, whose function is explained in more detail in the following description.
  • the bracket 15 is intended to receive one or more lifting and lowering devices such as a winch (not shown). Its positioning substantially above the external reactor 6 thus makes it possible to have immediately of a backup device for quickly extracting a person injured in the reactor 6, for example following a fall or malaise.
  • lifting devices can also be used in particular to perform various handling operations, such as for example the management of loading equipment or mechanical tools for maintenance personnel.
  • the holding structure 9 comprises in its upper part gripping means constituted by a plurality of rings 19 to be attached by means of slings (not shown) to an external lifting device (not shown)
  • This arrangement of the holding structure is used in particular to lift the installation to position it on a vehicle for transport.
  • the installation 1 comprises load distribution means.
  • the dispensing means make it possible to transfer from the storage hopper 3 to the external reactor 6 the load temporarily stored in the hopper.
  • the distribution means consist of a conveyor belt 21 at a processing end 22 of which the handle 18 is provided for introducing the feed into the external reactor 6.
  • the conveyor belt 21 is substantially positioned under the lower part 5 of the hopper 3.
  • the direction of movement of the conveyor belt is substantially perpendicular to the longitudinal axis 8 of the hopper 3. As shown in FIG. figure 1 , the direction of movement of the conveyor belt is substantially horizontal.
  • the direction of movement of the conveyor belt is substantially parallel to the longitudinal axis of the hopper.
  • the direction of movement of the conveyor belt is substantially vertical.
  • the dispensing means comprise a connecting sleeve connecting the lower part of the hopper to a handle intended to be directly immersed in the reactor (variant not shown in the figures).
  • the figure 2 illustrates in top view the installation provided with distribution means of which the conveyor belt 21 is in a so-called transport position.
  • the figure 3 illustrates the conveyor belt 21 shown this time in a so-called evacuation position.
  • the conveyor belt 21 is rotatable about an axis 23 substantially coincident with the longitudinal axis 8 of the hopper 3.
  • evacuation access to the manhole of the a treatment unit is improved, which facilitates the rescue of a person injured in the treatment unit.
  • the axis of rotation of the conveyor belt is defined as being perpendicular to a direction of movement of the load on the belt 21.
  • the axis of rotation is substantially vertical.
  • the axis of rotation of the dispensing means is transverse to the axis defined by the direction of movement of the conveyor belt. According to this variant, the transverse axis is substantially horizontal.
  • the installation is not restricted to the aforementioned axes of rotation, but the axis of rotation of the conveyor belt can be defined as being positioned at will so that the rotation of the belt causes the clearance of the hole. man from the treatment unit.
  • the conveyor belt 21 is preferably made according to the features described in the French patent published under the number FR 2,283,070 .
  • the conveyor belt 21 comprises a tube inside which moves an endless conveyor belt.
  • the strip is preferably made of rubber, and may be smooth or cleated.
  • the band is enclosed inside the tube and adopts substantially the shape of a trough.
  • the band passes at each end of the tube around drums, one of which is secured to a pulley driven by an electric, pneumatic or hydraulic motor.
  • the smooth character of the strip advantageously reduces the mechanical stresses of the load circulating inside the tube.
  • the speed of travel of the conveyor belt is variable, which makes it possible to control the volume of product conveyed.
  • the conveyor belt advantageously has inert gas diffusion means inside the tube.
  • the conveyor belt 21 has a displacement direction management module, allowing selection in two directions F1 and F2, represented in FIG. figure 1 the direction of movement of said carpet.
  • a movement of the conveyor belt 21 in the direction F1 makes it possible to route the load from an outlet 25 of the hopper 3 to a treatment end 22 of said belt.
  • a displacement of the conveyor belt 21 in the direction F2 makes it possible to route the load from the outlet 25 of the hopper to a recovery end 27 integral with a recovery sleeve 29 of the conveyor belt opening in the vicinity an external recovery unit 30, for example constituted by a tank or a can and allowing the recovery of part of the load not used for a reaction in progress.
  • the installation 1 according to the invention is intended to feed the external processing unit to the installation.
  • Said processing unit makes it possible to carry out an operation aimed at transforming the load initially present in the hopper 3.
  • the processing unit is constituted by a reactor 6 comprising in known manner a plurality of stages, each being shaped to support a particular reaction.
  • a crushing operation is applied to any solid material, preferably friable, that it is desired to reduce to fine particles or in reduced section. This material may be solid in its natural state or after a prior operation which has resulted in the formation of a solid product.
  • the treatment unit is constituted by a tank provided with crushing means.
  • the processing end 22 of the conveyor belt 21 is integral with a sleeve 18 for introducing the load.
  • the sleeve allows to introduce in the reactor the load conveyed from the hopper by the conveyor belt.
  • the sleeve 18 may not be secured to the conveyor belt 21 but the bracket 15, allowing a good alignment of the sleeve and the longitudinal axis of the reactor.
  • the sleeve 18 may also, according to another variant, be integral with the holding structure 9 of the hopper 3.
  • the sleeve 18 is preferably made of flexible material such as fabric or rubber, but can be made of rigid material such as aluminum if necessary.
  • the sleeve 18 has a preferably circular cross-section, but may also adopt a section of different geometry, in particular oval or rectangular, if the person skilled in the art will find it of particular interest.
  • the sleeve 18 is provided with means allowing the evacuation by suction of fine particles such as dust and broken catalyst.
  • These means consist of at least one vacuum cleaner of fine particles.
  • Such a vacuum cleaner of fine particles has the effect of removing dust and broken load of the catalyst to be loaded into the reactor, these dust and broken particles having been created during the transport of the catalyst from its factory from manufacturing to its storage hopper.
  • the size of the vacuum cleaner of fine particles is made according to the type of product to be treated, more precisely according to its density, the geometric shapes that it presents, its particle size, its material, etc.
  • Such a vacuum cleaner has a generally cylindrical shape, but can obviously adopt a completely different geometric shape, for example rectangular or oval.
  • the evacuation means are preferably made of steel, but can quite be made of any other rigid material, or of flexible material such as fabric for example.
  • the percentage of dust extraction and toxic breakage is a function of the number of vacuum cleaners that the installation includes.
  • the installation comprises a plurality of aspirators arranged in series along the loading introduction sleeve 18.
  • a first vacuum cleaner of fine particles is positioned near the processing end 22 of the conveyor belt 21, which makes it possible to carry out a first operation of purifying the catalyst.
  • the catalyst is poured into the introduction sleeve 18 itself equipped with a plurality of fine particle aspirators, which allows to continue the purification operation of the catalyst before its introduction into the external reactor.
  • the body of the vacuum cleaner is connected to one or more extraction means 43 located near the upper end 45 of the body 33 of the vacuum cleaner, and creating a depression in said body.
  • the depression in the body of the vacuum cleaner can be created by any mechanical means, such as a butterfly valve (not shown) for example.
  • the tube 35 is movable relative to the peripheral shell 37, substantially along the longitudinal axis 46 of the vacuum cleaner.
  • Mobility is provided by a mechanical system such as a rack system for example.
  • the positioning of the tube 35 at different heights of the peripheral envelope 37 makes it possible to modify the distance D corresponding to the distance separating the end portion of the outer envelope from the end portion of the tube 35.
  • the positioning of the tube 35 in the peripheral envelope 37 regulates the suction rate, the latter being inversely proportional to the distance D chosen.
  • the extraction means 43 consist of cyclones connected to a containment unit (not shown) preferably installed in a vehicle capable of transporting these toxic dusts in centers specialized in the treatment of toxic waste. This makes it possible to have an environmentally friendly installation.
  • the tube and the cone of the body of the vacuum cleaner are provided at their upper and lower ends with mechanical systems 47 such as connecting flanges for assembling the vacuum cleaner with the loading sleeve.
  • a sorting fabric 49 is installed at the upper end 45 of the body of the vacuum cleaner.
  • the installation comprises a plurality of sorting screens, the number of which is equal to the number of particle aspirators.
  • the fabric 49 makes it possible to avoid the extraction of particles whose size would be greater than that of the particles that it is desired to extract.
  • the sorting web is shaped to avoid subjecting the load to new mechanical stresses during its passage in said webs, which would have the effect of creating an attrition of the product.
  • such a fabric functions as a screen and has a mesh for extracting fines and broken pieces without extracting the entire product.
  • the sorting cloth is enclosed in the conveyor belt 21, positioned near the processing end 22 of said belt.
  • the catalyst is initially contained in a storage tank external to the plant according to the invention.
  • the catalyst will depend on the type of reaction envisaged, and typically takes the form of friable solid rods. For example, they may be activated nickel-based alumina rods, cobalt, vanadium, chromium, etc.
  • the hopper 3 is filled, for example, with the aid of a conveyor belt provided with a connecting sleeve, for example equipped at its end with a device for opening and automatic or semi-automatic emptying without the emission of such dust.
  • the catalyst stored in the hopper 3 is protected from the weather by the protective roof 12 and the inert gas diffusion device between the upper part 4 of the hopper 3 and said protective roof.
  • This catalyst is intended to interact in the reactor with hydrocarbon chains in order to remove sulfur from gas oil, for example.
  • the catalyst When the catalyst arrives at the processing end 22 of the conveyor belt 21, it enters the sleeve 18 and descends by gravity inside said sleeve. The dusts, floating, are sucked through the fine particle aspirators as previously described, to purify the catalyst impurities created by mechanical stress.
  • the evacuation means make it possible to eliminate from 10 to 90% of harmful fine particles before entering the external reactor 6.
  • the percentage of purification of the catalyst is on the one hand dependent on the initial pollution level of the particles fines, and secondly the number of fine particle aspirators that includes the installation according to the invention. Thus, it is quite possible to have a purification percentage not included in the above range. For example, in the presence of three or four particle aspirators, it is quite possible to obtain a catalyst purification of at least 95%.
  • the feedstock to be treated is introduced via injectors not shown and known to those skilled in the art.
  • the structure for maintaining the hopper comprises a bracket 15 intended to support an external lifting device.
  • This arrangement of the structure for maintaining the hopper makes it possible, in the case where persons are injured in the processing unit, to have autonomous emergency means, thus making it possible to eliminate the delay in installing additional emergency means. such as a crane, and to avoid having to remove the loading hopper. Thus, the security of the installation is greatly improved.
  • the conveyor belt 21 comprises a displacement direction F2, for introducing the catalyst into the external recovery unit 30, which makes it possible not to interrupt the cycle for preparing the loading of the hopper when the load needs to be changed.
  • the process step of preparing to fill the storage unit with a second load during the emptying phase of the first load must be understood as the step before filling the hopper with the second load when the the first one will have been drained.
  • the provision of the second load while the first load still remains at least partly in the storage unit avoids having to remove the hopper of its support structure.
  • the loading change times of the storage hopper are substantially shortened.
  • the first surplus load can be drained while simultaneously preparing another load that is to be introduced into the storage unit.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
EP13159574.6A 2012-03-15 2013-03-15 Umsetzungssystem für bröckligen Feststoff mit Ladungsvorrichtung und Ladeverfahren für dieses Produkt Withdrawn EP2638957A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1252359A FR2988083B1 (fr) 2012-03-15 2012-03-15 Installation pour la conversion d’un produit solide friable et procede de changement d'un chargement d'un tel produit

Publications (1)

Publication Number Publication Date
EP2638957A1 true EP2638957A1 (de) 2013-09-18

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EP13159574.6A Withdrawn EP2638957A1 (de) 2012-03-15 2013-03-15 Umsetzungssystem für bröckligen Feststoff mit Ladungsvorrichtung und Ladeverfahren für dieses Produkt

Country Status (2)

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EP (1) EP2638957A1 (de)
FR (1) FR2988083B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283070A1 (fr) 1974-08-26 1976-03-26 Lerebours Guy Transporteur tubulaire a bande sans fin
US5626455A (en) * 1994-01-27 1997-05-06 Basf Corporation Ethylene oxide catalyst loading device
US20050258015A1 (en) * 2003-02-05 2005-11-24 Kinzer Dwight E Track-and-trolley conveyor guidance system
FR2923464A1 (fr) 2007-11-08 2009-05-15 Manutube Sarl Dispositif pour l'ouverture et la vidange d'un grand recipient vrac souple (grvs)
WO2009156685A1 (fr) * 2008-06-27 2009-12-30 Mallet Michael Procédé et système de manutention de catalyseur pour industrie chimique
FR2954182A1 (fr) * 2009-12-23 2011-06-24 Macser Dispositif de conditionnement de catalyseur solide de reactions chimiques.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283070A1 (fr) 1974-08-26 1976-03-26 Lerebours Guy Transporteur tubulaire a bande sans fin
US5626455A (en) * 1994-01-27 1997-05-06 Basf Corporation Ethylene oxide catalyst loading device
US20050258015A1 (en) * 2003-02-05 2005-11-24 Kinzer Dwight E Track-and-trolley conveyor guidance system
FR2923464A1 (fr) 2007-11-08 2009-05-15 Manutube Sarl Dispositif pour l'ouverture et la vidange d'un grand recipient vrac souple (grvs)
WO2009156685A1 (fr) * 2008-06-27 2009-12-30 Mallet Michael Procédé et système de manutention de catalyseur pour industrie chimique
FR2954182A1 (fr) * 2009-12-23 2011-06-24 Macser Dispositif de conditionnement de catalyseur solide de reactions chimiques.

Also Published As

Publication number Publication date
FR2988083A1 (fr) 2013-09-20
FR2988083B1 (fr) 2014-04-25

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